// PNGHack 1.0 beta 2
// Copyright (c) 2008 Yves Van Goethem and png-hack project contributors
// http://code.google.com/p/png-hack/
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
document.write('<style type="text/css">.hack-png{visibility:hidden}</style>');
var PNGHack = function(spacer) {
	var images = [];
	var imgSpacer = spacer || 'images/spacer.gif';
	return {
		go : function() {
			for (var i = 0; i < document.images.length; i++) {
				if (document.images[i].className.match(/\bhack-png\b/))
					this.hack(document.images[i]);
			}
		},
		hack : function(img) {
			if (!img.pngsrc) images.push(img);
			img.pngsrc = img.pngsrc || img.src;
			img.style.width = img.offsetWidth;
			img.style.height = img.offsetHeight;
			img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+img.pngsrc+"',sizingMethod='scale')";
			img.src = imgSpacer;
			img.style.visibility = 'visible';
		},
		images : images
	};
};